You see things upside down - it is your brain which turns the image the right way up.

You see things upside down – it is your brain which turns the image the

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Human Body Facts

Your eyes start to develop two weeks after you are conceived

Human Body Facts

It takes about one minute for a single red blood cell to travel around

Human Body Facts

There is enough iron in your body to make a nail 8cm long!

Human Body Facts

Eyes contain around 107 million light-sensitive cells

Human Body Facts

When you swallow, your food travels down your oesophagus to your stomach

Human Body Facts

Men produce approximately ten million sperm every single day